Okay so my dads hdd that he has in laptop suddenly wont boot into windows 7 , only black screen with text Starting Windows shows up but logo doesnt appear , i cant even access safe mode because it will get stuck on loading system files , i plugged that hdd into my desktop and i can access it and look at the files tho. Are there some softwares or something like that that can check or even repair the corrupted windows on that hdd ? Thanks in advance